[Openstack-stable-maint] Stable check of openstack/oslo.service for ref refs/heads/stable/train failed

Build failed. https://zuul.opendev.org/t/openstack/buildset/6c080701c6f94a71a9631de6c35033... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6c48bb8448bc400c96ba12e0a3a9f3c0 : SUCCESS in 4m 43s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f9abdf7a7d384b3f966c200713ebb434 : FAILURE in 3m 50s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1fbf9699fae0443988ff02695b25c1f9 : SUCCESS in 3m 00s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2467edb7ab324b7ea69a3fb1a941ef75 : SUCCESS in 5m 16s